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Introduction to JavaScript (staging)
course content

Course Content

Introduction to JavaScript (staging)

Introduction to JavaScript (staging)

1. Introduction
Writing our first codeOutput Using Variables 1/2Output Using Variables 2/2
2. JavaScript syntax
JavaScript SyntaxJavaScript VariablesJavaScript OperatorsIdentifiers in JavaScriptNaming IdentifiersReserved keywords in JavaScriptNaming Convention in JavaScript. Case StylesVariables Naming ConventionBoolean Naming ConventionConstant Naming ConventionFunction & Classes Naming ConventionMultiline StringsMultiline Strings. ConcatenatingCommenting in JavaScriptCommenting in JavaScript. Multi-line Comments
3. Data Types and Variables
What are Variables?What are Data-types?JavaScript and Type ConversionVar 1/3Var 2/3Var 3/3Let 1/2Let 2/2Constant 1/3Constant 2/3Constant 3/3Number 1/3Number 2/3Number 3/3Boolean 1/4Boolean 2/4Boolean 3/4Boolean 4/4Strings 1/5Strings 2/5Strings 3/5Strings 4/5Strings 5/5BigInt 1/3BigInt 2/3BigInt 3/3Symbols 1/3Symbols 2/3Symbols 3/3NullUndefinedNull vs Undefined

bookBoolean 4/4

Simple Applications of Boolean() Function

We can pass expressions to the Boolean function to check whether it’s true or false. For example, the following code checks if the number passed to the Boolean() function is completely divisible by 3. It returns true if the value is completely divisible by 3 and false otherwise.


              
1

            
console.log(Boolean(21%3 == 0));
copy

But without Boolean() we also get the same result. But Boolean function gives more clarity that Boolean value must return.


              
1

            
console.log(21%3 == 0);
copy

Summary

  • Boolean values are either true or false.
  • The first letter of Boolean values (true and false) should be written in uppercase.
  • The Boolean() method is used to evaluate an expression and returns true or false based on results.

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Section 3. Chapter 18
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bookBoolean 4/4

Simple Applications of Boolean() Function

We can pass expressions to the Boolean function to check whether it’s true or false. For example, the following code checks if the number passed to the Boolean() function is completely divisible by 3. It returns true if the value is completely divisible by 3 and false otherwise.


              
1

            
console.log(Boolean(21%3 == 0));
copy

But without Boolean() we also get the same result. But Boolean function gives more clarity that Boolean value must return.


              
1

            
console.log(21%3 == 0);
copy

Summary

  • Boolean values are either true or false.
  • The first letter of Boolean values (true and false) should be written in uppercase.
  • The Boolean() method is used to evaluate an expression and returns true or false based on results.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 3. Chapter 18
toggle bottom row

bookBoolean 4/4

Simple Applications of Boolean() Function

We can pass expressions to the Boolean function to check whether it’s true or false. For example, the following code checks if the number passed to the Boolean() function is completely divisible by 3. It returns true if the value is completely divisible by 3 and false otherwise.


              
1

            
console.log(Boolean(21%3 == 0));
copy

But without Boolean() we also get the same result. But Boolean function gives more clarity that Boolean value must return.


              
1

            
console.log(21%3 == 0);
copy

Summary

  • Boolean values are either true or false.
  • The first letter of Boolean values (true and false) should be written in uppercase.
  • The Boolean() method is used to evaluate an expression and returns true or false based on results.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Simple Applications of Boolean() Function

We can pass expressions to the Boolean function to check whether it’s true or false. For example, the following code checks if the number passed to the Boolean() function is completely divisible by 3. It returns true if the value is completely divisible by 3 and false otherwise.


              
1

            
console.log(Boolean(21%3 == 0));
copy

But without Boolean() we also get the same result. But Boolean function gives more clarity that Boolean value must return.


              
1

            
console.log(21%3 == 0);
copy

Summary

  • Boolean values are either true or false.
  • The first letter of Boolean values (true and false) should be written in uppercase.
  • The Boolean() method is used to evaluate an expression and returns true or false based on results.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 3. Chapter 18
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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